2.1 beta 3b property-ref / caching problem

naggy · **Joined:** Mon Sep 08, 2003 7:30 am **Posts:** 17

Gavin,

possibly, there is a bug regarding the property-ref attribute of one-to-one associations and the caching of entities ...

Consider two entities A and B with each having it's own id.

As far, as I understood, starting from 2.1 we can define a proptery, which is not the id, to make the association.

So, entity B contains a property (let's sax id_of_a), which contains the id of A, I used the property-ref to define this.

Everything works fine until you switch on caching ...

The first access works well, but the second one does not, because Hibernate tries to look up the B entitiy for a paticular A entity with the id of the B entity, not the value of the id_of_a property.

Do you understand?

I guess, that the cache look-up stuff is not aware of the property-ref settings ...

Here is the corresponding query: select distinct a from ABean a, a.bee b

Thanx

gavin · **Posted:** Mon Sep 08, 2003 9:54 am

Naaaah! Not Possible!

heh :)

I'll have a look. This seems very likely.

gavin · **Posted:** Mon Sep 08, 2003 1:01 pm

This is fixed in CVS

naggy · **Joined:** Mon Sep 08, 2003 7:30 am **Posts:** 17

Great! Thanks!

naggy · **Joined:** Mon Sep 08, 2003 7:30 am **Posts:** 17

Gavin,

I wanted to checkout the changes from CVS, but there seems to a problem with the sourceforge CVS server. I'll try it later again.

The nightly snapshots seem to be from the 2.0.x branch, right? Would be nice, if we had a snapshot from head too ...

-Markus

gavin · **Posted:** Tue Sep 09, 2003 4:14 am

Its in v21branch, which is not snapshotted :(

naggy · **Joined:** Mon Sep 08, 2003 7:30 am **Posts:** 17

Gavin, do you have access to the sourceforge CVS server?

I tried it this afternoon, without success. Is it down?

-Markus

christian · **Posted:** Sat Sep 13, 2003 6:01 pm

The nightly snapshots are now the v21branch.

gavin · **Posted:** Sun Sep 14, 2003 1:03 am

naggy · **Joined:** Mon Sep 08, 2003 7:30 am **Posts:** 17

Gavin,

ace!

The property-ref works now ...

I'm afraid, but I believe, that there is another issue concering this topic:

the associated entities seem not to be cached, if I use the property-ref for one-to-one associations.

If have 2 entities, both with caching enabled, with a one-to-one association using the property-ref attribute. The associated entity gets queried again and again ...

I suppose, that this has to do with the lookup of the entity in the cache, where the PK is used instead of the property in property-ref ...?

-Markus

gavin · **Posted:** Tue Sep 16, 2003 2:04 pm

Correct. Only lookups by PK are cached.

naggy · **Joined:** Mon Sep 08, 2003 7:30 am **Posts:** 17

Will this be changed in the future?